[AT] old spark plugs

Doug Tallman dtallman at accnorwalk.com
Sun Nov 21 10:55:45 PST 2010


I think the Champion C4 was the factory plug for the Model A Ford. It 
probably fit others too. It was a 7/8 in thread.  Doug T


Ralph Goff wrote:
> Since we have been talking spark plugs I wonder if anybody can identify some old ones I have here. I'm guessing they came from my grandfather's McCormick Deering 15-30 tractor since that was the first engine on the farm. The only one older would be the IHC Famous 20 hp single cylinder stationary engine and I have no idea if that even had a spark plug. The list of spark plugs is as follows:
> AC 77, this is a dual electrode and a big plug that takes a 15/16 socket as do most of them. 
> AC 75 Com
> AC E9
> Champion 1Com
> Champion C4
> Champion 15A which a smaller plug taking a 7/8 socket. 
> The Champions are not "new in box" but slightly used in box. Wonder if they are worth anything to collectors?
>
> Ralph in Sask. 
> Champion 1 Com
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